Use of immunoglobulins from egg yolk to treat infections caused by parasites both in animals and in humans

This invention is related to the use of immunoglobulins obtained from the egg yolk of hens hyperimmunized with a mixture of oocysts from several Eimerias species, but can be extended to any human or animal parasites. The immunoglobulins are obtained through the aqueous phase extraction of egg yolk through the use of hydroxypropylmethylcellulose phtalate at a final concentration of 0.05% and sodium azide at a final concentration of 0.001% as preservative. This invention is related also to the administration of said immunoglobulins in powder form in the food at a rate of 0.5 kg per ton of finished food. The administration of immunoglobulins both in liquid as well as in powder form lowers mortality, lesions and counts of coccidian oocysts in treated animals. On the other hand, the use of immunoglobulins produces weight gain in the treated animals.